24
25CI400A/W • 25HI400A • 50CI400A/W • 50HI400A
Normal operation – Stage 1
Power is supplied to L1 of the control board. The ice level control in the dispenser is closed and calling for ice,
supplying signal voltage to the control board. The control board will now go through the start-up sequence. Less than
30 seconds will elapse as the water sensor located in the float reservoir checks for water in the reservoir. The bin
empty LED (B-E) and power LED (PWR) will be on
GRD
L1
L1
L2
L2
L2
L2
L2
COMPRESSOR
FAN
DRIVE
DR
C
20M
60M
2ND
WTR
B-T
B-E
RESET
GRD
G
B
W
FAN
BLACK
WHITE
BLACK
BLACK
R
ORANGE
S
S
L
COMPRESSOR
C
RED
BLACK
BLACK
WHITE
INPUT
POWER
WATER
SENSOR
CONTROL
BOARD
B
LA
CK
GEARMOTOR
24V
COMMON
LINE
V
A
C
RED
RED
WHIT
E
BL
A
C
K
BIN T-STAT
BIN SIGNAL
FROM DISPENSER
JUNCTION BOX
WHITE
RED
WHITE
M
1
COMPRESSOR
SWITCH
PWR
BLACK
T.O.L.
BLACK
RED
HIGH PRESSURE
SAFETY SWITCH
4
2
3
RUN
START
T.O.L.
B
LU
E
YELLOW
BLACK
WHITE
M
Normal operation – Stage 2
The water sensor verifies water in the float reservoir. The water OK LED (WTR) comes on. At the same time, the
gearmotor, compressor and condenser fan motor come on, lighting the drive LED (DR) and compressor LED (C). The
high initial current draw of the compressor run winding closes the contacts of the current relay energizing the start
winding through the run capacitor. The gearmotor is also started through a current style relay that is pulled in by the
initial high current draw of the run winding. The PWR, B-E and WTR LED remain on.
GRD
L1
L1
L2
L2
L2
L2
L2
COMPRESSOR
FAN
DRIVE
DR
C
20M
60M
2ND
WTR
B-T
B-E
RESET
GRD
G
B
W
FAN
BLACK
WHITE
BLACK
BLACK
R
ORANGE
S
S
L
COMPRESSOR
C
RED
BLACK
BLACK
WHITE
INPUT
POWER
WATER
SENSOR
CONTROL
BOARD
B
LA
CK
GEARMOTOR
24V
COMMON
LINE
V
A
C
RED
RED
WHIT
E
BL
A
C
K
BIN T-STAT
BIN SIGNAL
FROM DISPENSER
JUNCTION BOX
WHITE
RED
WHITE
M
1
COMPRESSOR
SWITCH
PWR
BLACK
T.O.L.
BLACK
RED
HIGH PRESSURE
SAFETY SWITCH
4
2
3
RUN
START
T.O.L.
B
LU
E
YELLOW
BLACK
WHITE
M
